baber/WOPTO huggingface dataset:
Patent GB-2014245-A (GB)
Title: Rotary Positive-Displacement Fluid-Machines
IPC: F01C17/02
Filed: 1979-02-07
Abstract: In an internally-meshing screw pump, compressor or motor a rotary outer screw member 110 cooperating with a rotary inner screw member 112 is connected to the latter by way of externally-toothed gears 115, 116 so that these members revolve synchronously without contact with each other. The gears may be interconnected through toothed belts 121, 122. Alternative arrangements of the gears and alternative interconnecting means therefor are described with reference to Figs. 1, 3 and 4 (not shown). <IMAGE>
Patent GB-2018087-A (GB)
Title: Processing circuit for colour television signals
IPC: H04N9/78
Filed: 1979-03-21
Abstract: A signal processing circuit (10) for colour television signals, e.g. PAL signals, has first and second one-line delays (14, 16) connected in series to the input (12), an averager (18) connected across the two delays and a subtractor (20) connected to subtract the averager output from the output of the first delay (14). In this way the circuit provides (i) a first signal at the output of the first delay (14) which is the input signal delayed by one line period and (ii) a second signal at the output of the subtractor (20) which is the resultant of the average of the undelayed input signal and the input signal delayed by two line periods subtracted from the input signal. A band-pass filter (22) covering the chrominance band is connected to the output of the subtractor (20). A second subtractor (24) subtracts the filtered signal from the one-line delayed signal. Separated luminance and chrominance are obtained at the outputs of the second subtractor (24) and the filter (22) respectively, which are especially suitable for digital use with line-locked sampling frequencies. Either output may be used on its own. Not N.T.S.C. signals, a divide-by-two circuit is included in series with the band-pass filter (22). <IMAGE>
Patent GB-2021373-A (GB)
Title: Soil cultivating implement
IPC: A01B33/10
Filed: 1979-05-17
Abstract: A soil cultivating implement comprises a plurality of soil working members that are rotatable about the axes of corresponding obliquely disposed shafts, the shafts being rotatably supported, together with a plurality of intermediate rotary shafts, by a hollow box-section frame portion (1) and is capable of concurrently supplying fertiliser and/or herbicide and/or pesticide into the soil by way of spraying mechanism (19, 20), opening plurality of relatively spaced apart furrows in the ground by way of cultivating elements (12) of its rotary soil working members, introducing rows of seeds or young plants into the furrows by way of sowing/planting mechanisms (18) and closing said furrows: The cultivating elements (12) are of S-shaped cross-section and extend in axially registering relationship with the oblique axes of rotation of the respective soil working members which axes of rotation are preferably inclined, upwardly and forwardly, to ground level at angles of 75 DEG . The spacing between the rotary shafts which are provided with cultivating elements (12) and the spacing between the sowing/planting mechanisms (18) is variable. <IMAGE>
Patent GB-2030688-A (GB)
Title: Fluidised bed incinerators
IPC: F23G5/30
Filed: 1979-06-29
Abstract: The invention relates to the treatment of waste liquors and particularly to a steam generator and systems including same therefor. In known systems for treating such liquors to extract inorganic compounds therefrom, fluidised beds have been used but the heat generated has largely been wasted and can in some instances be so great as to generate temperatures in excess of the fusion temperature of the compounds. The present invention incorporates into such fluidised bed systems a means for utilising the generated heat and at the same time controlling the bed temperature. The means comprises a plurality of tubes (118, 146 Fig. 2) which pass through the fluidised bed (22) in heat exchange relationship therewith to extract heat therefrom. The tubes will carry a fluid, normally water which may be evaporated to steam by the heat in the bed. <IMAGE>
Patent GB-2030050-A (GB)
Title: Fairground amusement apparatus
IPC: A63G1/10
Filed: 1979-09-04
Abstract: The apparatus comprises a tower assembly 20 mounted on a trailer 10, the assembly being pivoted at 22 for movement between lowered and raised positions. The tower assembly comprises a lower part 28 which is fixed in use, and an upper part 30 rotatable on the lower part and having a plurality of car-carrying arms 32 projecting therefrom, the arms being movable vertically by means of pneumatic rams 40. The lower and upper parts 28, 30 together form a closed hollow shape within which the driving mechanisms are housed. <IMAGE>
Patent GB-2064356-A (GB)
Title: Conversion process for organic compounds
IPC: C07C41/03
Filed: 1979-11-06
Abstract: A conversion process employing a solid acid catalyst, preferably a polyfluorosulfonic acid catalyst, in which a first organic compound reactant reacts with a second organic compound reactant to produce a desired first product which tends to react with the second reactant to produce an undesired second product, comprises the steps of (i) vaporizing the first reactant 16 in a reflux zone 10, (ii) passing vaporized first reactant 11 through a catalyst zone 12 to a condenser wherein vaporized first reactant is condensed, (iii) returning condensed first reactant to the catalyst zone and in the catalyst zone contacting condensed first reactant with vaporized first reactant and the second reactant, (iv) passing reaction products and unreacted condensed first reactant 18 to the reflux zone, and (5) recovering the desired first reactant 17. Optionally, uncondensed second reactant 14 leaving catalyst/condensor zone 12 may be recycled 19 to the supply line 13 for that reactant. The conversion process may be alkylation of organic compounds or oxyalkylation of hydroxyl compounds. <IMAGE>
Patent GB-2039518-A (GB)
Title: A process and a plant for preparing a gas rich in methane
IPC: C07C1/04
Filed: 1979-12-11
Abstract: Catalytic methanation process wherein a feed gas containing predominantly hydrogen and rich in carbon oxides is divided into two part streams of which the first is methanated partially in an adiabatic catalytic methanation reactor whereafter the effluent is united after cooling with the second feed gas part stream and the thus-combined stream is catalytically methanated in a cooled methanation reactor, preferably with the same catalyst as that used in the adiabatic methanation reactor. It is possible, but not always necessary, to recycle part of the product gas to the adiabatic methanation reactor to keep the temperature therein at a moderate level. <IMAGE>
Patent GB-2042453-A (GB)
Title: Conveyor belt take-up device
IPC: B65G23/44
Filed: 1979-12-21
Abstract: Take-up device for maintaining or regulating conveyor belt tension has a fluid pressure actuator (8) which acts on the bearing housing 5 of the belt pulley, the bearing housing being movable along a fixed guide 6. Locking elements 12 in the form of ratchet elements are provided along the guide and cooperate with the actuator 8 and bearing housing 5. In operation a plate 1 on the actuator 8 engages the ratchet 12 as the piston of the actuator is advanced to push the housing along the guide. Further tensioning may be applied by depressuring the actuating whereupon the housing engages a ratchet 12, the piston is drawn into the actuator by a spring and the plate 10 engages a further ratchet, repressuring of the actuator moving the housing further along the guide. <IMAGE>
Patent GB-2055792-A (GB)
Title: Processes for finishing glass surfaces
IPC: C03C15/02
Filed: 1980-07-02
Abstract: A method of finishing a glass surface to a close tolerance and a substantially blemish-free state using a moving polishing lap and an aqueous treatment liquid containing inert abrasive particles, in which the treatment liquid also contains a bifluoride (e.g. of K or NH4( which reacts with the glass to form an insoluble silicofluoride or fluoride, an acid supplying hydrogen ions and a solubility suppressant which ensures that the silicofluoride or fluoride separates out on the glass surface, whereby the lap and inert particles remove the silicofluoride or fluoride from high portions of the glass surface and thereby allow further reaction and glass removal in those areas until the desired finished form of the glass surface has been achieved, whereupon the supply of treatment liquid is stopped and immediately replaced by a supply of an alkaline neutralising solution, e.g. of sodium carbonate, containing inert particles and the surface is finally washed to remove the alkaline solution and any remaining neutralised treatment liquid. The treatment liquid may also include an oxidant viz. nitric acid, chromic acid or hydrogen peroxide. The invention facilitates the polishing of ophthalmic lenses and optical flats and prisms.
Patent GB-2055452-A (GB)
Title: Bi-leaflet Heart Valve
IPC: A61F2/24
Filed: 1980-07-07
Abstract: A bi-leaflet heart valve comprises two complementary leaflets which open and close a passageway of generally circular cross-section through an annular valve body 13. Each of the leaflets is pivoted by interengaging means at opposite locations on the annular valve body. The valve body is provided with arcuate seat means 47 having a downstream facing surface, and the leaflets are each formed with a major arcuate edge 31 which seals against the interior surface of the valve body and with a planar minor edge 29. In the closed position, the upstream surfaces of the leaflets lie in abutting contact with the downstream surface of the seat, and the planar edges 29 abut each other along a plane diametric of the passageway. The proportioning of the leaflets and the location of the seats are such that the load on the interengaging means is relieved in the closed position, wherein the load is supported primarily by the contact between the leaflets and the seat. <IMAGE>
Patent GB-2058596-A (GB)
Title: Mixing materials in desired proportions
IPC: B01J4/02
Filed: 1980-08-05
Abstract: In mixing apparatus in which a plurality of chemical materials are to be incorporated in a predetermined sequence in desired proportions in a carrier liquid, such as water, the materials are combined in a cascaded arrangement of liquid filled chambers, the respective materials being supplied from separate sources (11, 20, 34, 51, 63) by pumps, (13, 25, 40, 56, 68). Delivery of the carrier liquid is effected to a first mixing chamber (15) to which a first chemical material is supplied, the contents of the first mixing chamber (15) is then delivered to a second mixing chamber (35) to which another material is supplied, and then to a third mixing chamber (50) where another material is added, additional mixing chambers and pumps being provided for additional chemical materials. The pumps (1 3, 25, 40, 56, 68) may be simultaneously driven from a single power source (77, 78) each delivering a controlled quantity of chemical material. The material in each mixing chamber may be agitated by suitable means (80, 81, 82) and the mixing chambers (15, 35, 50, 62) may comprise separate receptacles, tanks with partitions or may be pump housings. <IMAGE>
Patent GB-2059253-A (GB)
Title: Chaff cutter
IPC: B26D7/26
Filed: 1980-09-18
Abstract: When, in a chaff cutter, the blades (6) of the cutting drum are ground, the associated recutter (5) must be adjusted for maintenance of optimum cutting conditions by the amount of the diameter reduction in the chaff cutting drum. So that the recutter can be reset, externally of the drum, for different drum diameters without an expensive re-equipment operation, support segments (4) are mounted on both of the side wall members (1) of the chaff cutter. Arranged in wall (1) around the radially outer surfaces of the segments (4) are arcuate elongate slots (9) through which spacers (7), corresponding to the drum diameter, are insertable. The recutter (5) is provided at one end with eyelets (10) receiving bolts (12) guided in guide slots (11). The recutter (5) also bears on the spacers (7) and is clamped thereagainst by clamping screws (14) securing a bent end portion (13) of the recutter to a housing (15) of the drum. <IMAGE>
Patent GB-2053161-A (GB)
Title: Device for changing rollers
IPC: B65H19/14
Filed: 1980-02-20
Abstract: A web unrolled from a roller (7, 8) is cut out into sheets in a transverse cutter (3) which are then supplied to a sheet using machine. To provide a continuous or roller change during the operation without forming in the sheets thicker locations which would affect the printing, a second transverse cutter (10) is arranged beside the first cutter (3) which allows to butt joint a tail end (11) of a web and a head end of the following web (12). The length of the web extending between the two cutters is adjustable.
Patent GB-2089177-A (GB)
Title: Signal error detecting
IPC: H03K5/01
Filed: 1980-11-18
Abstract: Apparatus for example for use in achieving correct field framing on reproduction of a digital PAL television signal from a video tape recorder, by correcting errors in an input square-wave signal which signal alternates between first and second levels every four fields of the television signal, the apparatus comprising first and second similar counters 20, 23 and 22, 28 to be supplied with the input signal so as to be enabled to count when the input signal is of the first and said second level respectively, means 10 to detect errors in the input signal and thereupon to supply a signal to disable both the first and second counters 20, 23 and 22, 28, a clock pulse source 31 for supplying a clock pulse signal of high frequency relative to the frequency of the input signal to the first and second counter 20, 23 and 22, 28, and a bistable circuit 25 arranged to be triggered to a first stable condition by an overflow signal from the first counter 20, 23 and to a second stable condition by an overflow signal from the second counter 22, 28, whereby the bistable circuit 25 supplies a corrected replica of the input signal.
Patent GB-2068649-A (GB)
Title: System for fastening the end cover of an electric motor
IPC: H02K5/15
Filed: 1980-12-08
Abstract: Each of the tie rods 7, for connecting the end cover 8 to the yoke 9 of an electric motor 2 has at least one fastening element 11 in the form of a V provided with hooks 12, 13 whose oblique edges 12a, 13a cooperate with the oblique face 15a of a depression 15 in the end portion 8b of the end cover 8. The end cover is not deformed during fastening. A couple is produced which tends to move the tie rods towards the periphery of the yoke. <IMAGE>
Patent GB-2074748-A (GB)
Title: Alignment bench for the accurate positioning of a cylinder of small diameter
IPC: G01B5/25
Filed: 1980-12-22
Abstract: An alignment bench for maintaining in a well-defined position a small-diameter cylinder - of the order of 100 microns - so as to fix it in an end-piece. The alignment bench comprises a metal block in which is cut out a reference dihedron 9. One end 8 of the dihedron receives the end-piece, which is thus positioned therein, and held in place by adequate means. The other end of the dihedron serves for positioning the cylinder with respect to the end-piece, by means of two shims 10, 11, which form a new dihedron in which the cylinder rests. The particularity of this alignment bench is to maintain the cylinder in position by means of vents 12 connected to a suction device provided by a vacuum or, according to a variation, by venturis. <IMAGE>
Patent GB-2067797-A (GB)
Title: Alarm clock
IPC: G04C23/16
Filed: 1981-01-15
Abstract: In the time detecting device of an alarm clock is provided with an hour gear wheel and an alarm gear wheel, each having an indication hand, engaging with a second hour gear wheel and a second alarm gear wheel respectively. An detecting cam plate is provided so as to be axially shiftable and continuously pushed and turned by the second hour gear wheel. A projection is formed on either the second alarm gear wheel or the detecting cam plate while a hole is formed on the other. When the respective phases of the projection and the hole coincide, the detecting cam plate is allowed to shift to actuate the alarm device.
Patent GB-2069861-A (GB)
Title: Fluidized bed gasifier
IPC: C10J3/56
Filed: 1981-02-09
Abstract: A fluidized bed 2 has heating coils 4 within a bed of coal to be gasified. A combustion system 10 for the char produced by the gasifier is provided and its products of combustion flow through the bed heating coils, thus supplying heat to the bed. A steam generator 15 receives the output of the heating coils so that the heat from the output of the coils can be utilized to generate low pressure, superheated steam which is conducted to the fluidized bed to both fluidize and react with the bed producing a medium BTU gas free of nitrogen. Initially burner system 10 burns any auxiliary fuel until bed 2 produces sufficient char. <IMAGE>
Patent GB-2071210-A (GB)
Title: Four-stroke engine with a charging piston pump
IPC: F02B75/02
Filed: 1981-02-27
Abstract: An air or mixture charging cylinder 10 is disposed between the working cylinders 2, 3 which receive a charge alternately from the charging cylinder. The cylinder 10 is supplied from a pipe 19 containing a throttle valve 26 via two inlet valves 18a, 18b. <IMAGE>
Patent GB-2073180-A (GB)
Title: Morpholino compounds
IPC: C07D265/30
Filed: 1981-03-19
Abstract: Novel morpholino compounds having the general formula   <IMAGE> I wherein R1 is a straight or branched alkyl group containing 8 to 16 carbon atoms at the 2- or 3-position of the morpholino ring, and R2 is a straight or branched alkyl group containing 2 to 10 carbon atoms, substituted with a hydroxy group except in the alpha-position, the sum of the carbon atoms in the groups R1 and R2 being at least 10 and preferably 10 to 20; and pharmaceutically acceptable salts thereof. Compositions for the treatment of the oral cavity and especially the tooth surfaces containing the novel compound or a salt thereof, preferably from 0.1 to 5% by weight thereof. Use of the compounds to inhibit the formation of dental plaque or remove plaque already formed by application of the compound in an aqueous solution or a composition to the surfaces of the oral cavity, especially the surfaces of the teeth. Processes for the preparation of the compounds.
Patent GB-2095738-A (GB)
Title: Hollow glazing panels
IPC: E06B3/66
Filed: 1981-03-27
Abstract: A decorative light transmitting hollow glazing panel comprises a figured glazing sheet 12 and at least one other glazing sheet 11 and at least one sheet face bears a coating 15 adapted to enhance the reflectivity of the coated sheet face in respect of visible light radiation. In a another aspect, the other sheet 11 is a sheet of tinted glazing material. <IMAGE>
Patent GB-2098300-A (GB)
Title: Improvements in and relating to the lining of sewers pipes or the like
IPC: E03F9/00
Filed: 1981-04-08
Abstract: A method of removing obstructions from within a sewer or pipe system comprises introducing into a primary bore (20) of the system a water jetting device comprising at least one jet nozzle (7). An obstruction within the main bore (20) or at the orifice of a branch pipe (22) may be removed by directing from the jet nozzle (7) a high pressure water jet at a pressure sufficient to cut away the obstruction. When the obstruction is within the main bore (20) the jet nozzle (7) is located with its axis adjacent and approximately parallel to the internal circumference of the bore, and is pivoted about an axis coinciding with the central axis of the bore. When the obstruction is at the entry to the branch pipe (22) the axis of the nozzle (7) is located at right angles to the longitudinal axis of the bore (20) and is pivoted about the central axis of the branch pipe (22). The water jetting device is located within the sewer or pipe system by means of a sled or like guide means (1) and the movement of the jet nozzle (7) is effected by remotely controlled guide means under the supervision of a closed circuit television camera or other sensing means.
Patent GB-2073706-A (GB)
Title: A box for writing instruments
IPC: A45C11/34
Filed: 1981-04-09
Abstract: A cylindrical synthetic resin box for coloured crayons has an inner barrel made up of an annular array of chambers (48) for the separate crayons and a rotatable cover (58) which may be locked in any of a number of positions such that an opening (59) in the cover (58) is lined up with any one of the chambers (48), so that a crayon within the given chamber may be slipped out of the box for use, or in intermediate positions in which no crayon may be taken from the box. Viewing windows (61) in the cover (58) enable crayons of particular colours to be identified by means of correspondingly coloured areas adjacent the chambers. <IMAGE>
Patent GB-2076248-A (GB)
Title: A double sideband commutated doppler system
IPC: G01S1/40
Filed: 1981-05-06
Abstract: This invention is a description of a double sideband commutated Doppler navigation system for landing aircraft of spacecraft. It enables an aircraft 28 to determine its angular position  theta  in azimuth or elevation, its horizontal velocity Vh, range d from the ground transmitter and height h above ground, by the measurement of Doppler frequencies in an airborne receiver. The aircraft is also able to detect and correct residual multipath errors in the Doppler frequencies by means of an additional beacon signal of known design frequency. The new system is a self-sufficient, air-derived navigation system. Signals transmitted from a ground station are processed in the air- borne receiver and highlights of its design include a simple baseline of radiators 27, two fixed reference radiators 25, 26, at each end of the baseline, a single commutating source and a large time-bandwidth product for averaging and reducing multipath errors in the system. <IMAGE>
Patent GB-2075744-A (GB)
Title: Strip line cable
IPC: H01B7/08
Filed: 1981-05-08
Abstract: A strip line cable is provided comprising a dielectric (1) in tape form made of a porous, crystalline polymer and one or more pairs of electrical conductors (such as 2a,2a min ) each pair of conductors having a first conductor located on one side of the tape and the other conductor located on the opposite side of said tape and in substantially parallel relationship to the first conductor of the pair. The pairs of conductors are arranged in substantially parallel transverse relationship across said tape, and insulating layers (3, 3 min ) made of a suitable non-porous plastic material are placed over the conductors to affix them to said dielectric tape and encapsulate the cable assembly. The preferred tape dielectric is expanded, porous polytetrafluoroethylene.
Patent GB-2102769-A (GB)
Title: Unwind-rewind unit for web treatment
Inventor: COOPER RONALD CHARLES EDWARD
IPC: B65H18/02
Filed: 1981-07-30
Abstract: During treatment of one side of a web, the web is unwound from one mandrel (eg 4) of a rotatable turret and rewound on another mandrel (eg 5) of the same turret. The turret is then rotated and the web unwound and rewound again to treat the other side of the web. The turret can be rotated to a web loading/unloading position. Preferably three web rolls are sequentially unwound, treated and rewound on a four mandrel turret with the webs being spliced end to end for feeding through the treatment station. The arrangement enables each web to be loaded onto the turret only once for treatment of both sides of the web. <IMAGE>
Patent GB-2087287-A (GB)
Title: Safety razors
IPC: B26B21/22
Filed: 1981-09-30
Abstract: A safety razor head includes a platform portion (22) a back portion (6), a cap portion (8) overlying the platform portion, and end walls interconnecting the platform and cap portions, the platform, back, cap and end wall portions being formed as integrally moulded plastics unit. A single blade member or blade assembly (40,44) is permanently disposed between the cap and platform portions, the cap portion exercizing a resilient clamping pressure on the blade member or assembly to retain it against the platform member. <IMAGE>